fullscreen/api/permission.tentative.https.html

<!doctype html>
<meta charset=utf-8>
<title>Permissions API query support for "fullscreen"</title>
<link rel="help" href="https://github.com/explainers-by-googlers/html-fullscreen-without-a-gesture">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>

<script>
  promise_test(async (test) => {
    let allowWithoutGestureCalled = false;
    const status = await navigator.permissions.query({
      name: "fullscreen",
      get allowWithoutGesture() {
        allowWithoutGestureCalled = true;
        return true;
      },
    });
    assert_true(status instanceof PermissionStatus);
    assert_equals(status.name, "fullscreen", `name should be "fullscreen"`);
    assert_true(allowWithoutGestureCalled, `allowWithoutGesture should be checked`);
  }, `Querying "fullscreen" permission checks "allowWithoutGesture" option`);

  promise_test(async (test) => {
    const descriptor = { name: "fullscreen", allowWithoutGesture: true };
    await test_driver.set_permission(descriptor, "granted");
    const status = await navigator.permissions.query(descriptor);
    assert_true(status instanceof PermissionStatus);
    assert_equals(status.name, "fullscreen", `name should be "fullscreen"`);
    assert_equals(status.state, "granted", `state should be "granted", as set`);
  }, `Set and query "fullscreen" permission with "allowWithoutGesture" true`);

  promise_test((test) => {
    const descriptor = { name: "fullscreen", allowWithoutGesture: false };
    return promise_rejects_js(test, TypeError, navigator.permissions.query(descriptor));
  }, `Querying "fullscreen" permission with "allowWithoutGesture" false is unsupported`);

</script>